Hi,
What I can suggest is, you can combine inputs from the esteemed members in this thread. and also research citehr for topics such as
Time Management
Stress Management
Dealing with Bosses
Assertive Skills
Soft Skills
Customer Management or KYC (Know your customer) concepts
Work Life balance
Self Motivation
Prepare one or several presentations, combining various aspects relevant to your industry and job roles and duties. First research and read about this mentioned concepts and inputs provided by the members here
Then survey, research, explore, discover, understand actual challenges faced by standard sales person and your sales team.
Draft one or few presentations keeping your research and knowledge of thier problems in perspective and organize an interactive session with them to educate them on How to handle pressure and perform.
Motivating employees is a continous task, you need to feel thier situation (be in thier shoes), understand and emphatize when you present them tips and techniques to deal with pressure and perform, audience must feel that you understand them, thier job roles, duties, pressures, work flow, challenges, then only they will show interest or learn from your efforts.
I have come across many opinions from line staff, that HRs only gives flashy presentations, with "big talks" and dont understand ground realities and challenges. usually this type of efforts are ignored or just visited by staff as yet another "big talk" activity, when they dont connect with the trainer or speaker.
Its great to know you are researching this issues, I m sure you will do your research, just giving you some inputs. hope its helpful.
Best Wishes